Relationship between the electrical properties and crystal structure of (La{sub 1-x}Nd{sub x})CrO{sub 3} (0 {le} x {le} 1.0)

Journal Article · Sun Jan 01 04:00:00 EST 1995 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1995.1034· OSTI ID:552738

Taguchi, Hideki; Nagao, Mahiko ^[1]; Takeda, Yasuo ^[2]

---

1. Okayama Univ. (Japan)
2. Mie Univ., Tsu (Japan)

Perovskite-type (La{sub 1-x}Nd{sub x})CrO{sub 3} has the orthorhombic GdFeO{sub 3{minus}} type structure with the space group Pnma. The electrical resistivity of (La{sub 1-x}Nd{sub x})CrO{sub 3}(0 {le} x {le} 1.0) was measured in the temperature range 300 to 1000 K. Although the cell volume decreases linearly with increasing x, significant compositional dependence on electrical resistivity is not found. (La{sub 1-x}Nd{sub x})CrO{sub 3} is a p-type semiconductor resistivity is not found. (La{sub 1-x}Nd{sub x})CrO{sub 3} is a p-type semiconductor with an activation energy of ca. 0.26 to ca. 0.28 eV. Rietveld analysis and XPS measurements indicate that each CrO{sub 6} octahedron has little distortion and that the decrease in the angles for Cr-O(1)-Cr or Cr-O(2)-Cr is caused by the linear decrease in the cell volume.

• OSTI ID: 552738
• Journal Information: Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 1 Vol. 114; ISSN 0022-4596; ISSN JSSCBI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM OXIDES
CRYSTAL STRUCTURE
ELECTRICAL PROPERTIES
LANTHANUM OXIDES
NEODYMIUM OXIDES